Oficial Optimus G E975 Kit Kat 4.4.2

Do we know something about Optimus GJ 975w? I couldn't find anything about GJ related ROMs, methods (unlock, root).
We can say that difference between them just "w" (=waterproof), but I never ever find any comment that XY ROM is available for 975w as well.

I just attached screenshot where now we are.

Any ideas? I can't imagine that there is no chance to customize this device. Very big thanks!

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